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SCons / src / engine / SCons / Tool / docbook / docbook-xsl-1.76.1 / common / common.xml

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<?xml version="1.0"?>

<reference xml:id="base">
  <info>
    <title>Common » Base Template Reference</title>
    <releaseinfo role="meta">
      $Id: common.xsl 8784 2010-07-28 12:32:54Z mzjn $
    </releaseinfo>
  </info>
  
  <partintro xml:id="partintro">
    <title>Introduction</title>
    
<para>This is technical reference documentation for the “base”
      set of common templates in the DocBook XSL Stylesheets.</para>

    
<para>This is not intended to be user documentation. It is
      provided for developers writing customization layers for the
      stylesheets.</para>

  </partintro>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.is.component">
<refnamediv>
<refname>is.component</refname>
<refpurpose>Tests if a given node is a component-level element</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="is.component"&gt;
&lt;xsl:param name="node" select="."/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template returns '1' if the specified node is a component
(Chapter, Appendix, etc.), and '0' otherwise.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>node</term>
<listitem>

<para>The node which is to be tested.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1><refsect1><title>Returns</title>

<para>This template returns '1' if the specified node is a component
(Chapter, Appendix, etc.), and '0' otherwise.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.is.section">
<refnamediv>
<refname>is.section</refname>
<refpurpose>Tests if a given node is a section-level element</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="is.section"&gt;
&lt;xsl:param name="node" select="."/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template returns '1' if the specified node is a section
(Section, Sect1, Sect2, etc.), and '0' otherwise.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>node</term>
<listitem>

<para>The node which is to be tested.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1><refsect1><title>Returns</title>

<para>This template returns '1' if the specified node is a section
(Section, Sect1, Sect2, etc.), and '0' otherwise.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.section.level">
<refnamediv>
<refname>section.level</refname>
<refpurpose>Returns the hierarchical level of a section</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="section.level"&gt;
&lt;xsl:param name="node" select="."/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template calculates the hierarchical level of a section.
The element <tag>sect1</tag> is at level 1, <tag>sect2</tag> is
at level 2, etc.</para>



<para>Recursive sections are calculated down to the fifth level.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>node</term>
<listitem>

<para>The section node for which the level should be calculated.
Defaults to the context node.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1><refsect1><title>Returns</title>

<para>The section level, <quote>1</quote>, <quote>2</quote>, etc.
</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.qanda.section.level">
<refnamediv>
<refname>qanda.section.level</refname>
<refpurpose>Returns the hierarchical level of a QandASet</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="qanda.section.level"/&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template calculates the hierarchical level of a QandASet.
</para>

</refsect1><refsect1><title>Returns</title>

<para>The level, <quote>1</quote>, <quote>2</quote>, etc.
</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.select.mediaobject">
<refnamediv>
<refname>select.mediaobject</refname>
<refpurpose>Selects and processes an appropriate media object from a list</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="select.mediaobject"&gt;
&lt;xsl:param name="olist" select="imageobject|imageobjectco                      |videoobject|audioobject|textobject"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template takes a list of media objects (usually the
children of a mediaobject or inlinemediaobject) and processes
the "right" object.</para>



<para>This template relies on a template named 
"select.mediaobject.index" to determine which object
in the list is appropriate.</para>



<para>If no acceptable object is located, nothing happens.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>olist</term>
<listitem>

<para>The node list of potential objects to examine.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1><refsect1><title>Returns</title>

<para>Calls &lt;xsl:apply-templates&gt; on the selected object.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.select.mediaobject.index">
<refnamediv>
<refname>select.mediaobject.index</refname>
<refpurpose>Selects the position of the appropriate media object from a list</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="select.mediaobject.index"&gt;
&lt;xsl:param name="olist" select="imageobject|imageobjectco                      |videoobject|audioobject|textobject"/&gt;
&lt;xsl:param name="count"&gt;1&lt;/xsl:param&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template takes a list of media objects (usually the
children of a mediaobject or inlinemediaobject) and determines
the "right" object. It returns the position of that object
to be used by the calling template.</para>



<para>If the parameter <parameter>use.role.for.mediaobject</parameter>
is nonzero, then it first checks for an object with
a role attribute of the appropriate value.  It takes the first
of those.  Otherwise, it takes the first acceptable object
through a recursive pass through the list.</para>



<para>This template relies on a template named "is.acceptable.mediaobject"
to determine if a given object is an acceptable graphic. The semantics
of media objects is that the first acceptable graphic should be used.
</para>



<para>If no acceptable object is located, no index is returned.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>olist</term>
<listitem>

<para>The node list of potential objects to examine.</para>

</listitem>
</varlistentry>
<varlistentry><term>count</term>
<listitem>

<para>The position in the list currently being considered by the 
recursive process.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1><refsect1><title>Returns</title>

<para>Returns the position in the original list of the selected object.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.is.acceptable.mediaobject">
<refnamediv>
<refname>is.acceptable.mediaobject</refname>
<refpurpose>Returns '1' if the specified media object is recognized</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="is.acceptable.mediaobject"&gt;
&lt;xsl:param name="object"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template examines a media object and returns '1' if the
object is recognized as a graphic.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>object</term>
<listitem>

<para>The media object to consider.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1><refsect1><title>Returns</title>

<para>0 or 1</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.check.id.unique">
<refnamediv>
<refname>check.id.unique</refname>
<refpurpose>Warn users about references to non-unique IDs</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="check.id.unique"&gt;
&lt;xsl:param name="linkend"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>If passed an ID in <varname>linkend</varname>,
<function>check.id.unique</function> prints
a warning message to the user if either the ID does not exist or
the ID is not unique.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.check.idref.targets">
<refnamediv>
<refname>check.idref.targets</refname>
<refpurpose>Warn users about incorrectly typed references</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="check.idref.targets"&gt;
&lt;xsl:param name="linkend"/&gt;
&lt;xsl:param name="element-list"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>If passed an ID in <varname>linkend</varname>,
<function>check.idref.targets</function> makes sure that the element
pointed to by the link is one of the elements listed in
<varname>element-list</varname> and warns the user otherwise.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.copyright.years">
<refnamediv>
<refname>copyright.years</refname>
<refpurpose>Print a set of years with collapsed ranges</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="copyright.years"&gt;
&lt;xsl:param name="years"/&gt;
&lt;xsl:param name="print.ranges" select="1"/&gt;
&lt;xsl:param name="single.year.ranges" select="0"/&gt;
&lt;xsl:param name="firstyear" select="0"/&gt;
&lt;xsl:param name="nextyear" select="0"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template prints a list of year elements with consecutive
years printed as a range. In other words:</para>


<screen>&lt;year&gt;1992&lt;/year&gt;
&lt;year&gt;1993&lt;/year&gt;
&lt;year&gt;1994&lt;/year&gt;</screen>


<para>is printed <quote>1992-1994</quote>, whereas:</para>


<screen>&lt;year&gt;1992&lt;/year&gt;
&lt;year&gt;1994&lt;/year&gt;</screen>


<para>is printed <quote>1992, 1994</quote>.</para>



<para>This template assumes that all the year elements contain only
decimal year numbers, that the elements are sorted in increasing
numerical order, that there are no duplicates, and that all the years
are expressed in full <quote>century+year</quote>
(<quote>1999</quote> not <quote>99</quote>) notation.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>years</term>
<listitem>

<para>The initial set of year elements.</para>

</listitem>
</varlistentry>
<varlistentry><term>print.ranges</term>
<listitem>

<para>If non-zero, multi-year ranges are collapsed. If zero, all years
are printed discretely.</para>

</listitem>
</varlistentry>
<varlistentry><term>single.year.ranges</term>
<listitem>

<para>If non-zero, two consecutive years will be printed as a range,
otherwise, they will be printed discretely. In other words, a single
year range is <quote>1991-1992</quote> but discretely it's
<quote>1991, 1992</quote>.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1><refsect1><title>Returns</title>

<para>This template returns the formatted list of years.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.find.path.params">
<refnamediv>
<refname>find.path.params</refname>
<refpurpose>Search in a table for the "best" match for the node</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="find.path.params"&gt;
&lt;xsl:param name="node" select="."/&gt;
&lt;xsl:param name="table" select="''"/&gt;
&lt;xsl:param name="location"&gt;
    &lt;xsl:call-template name="xpath.location"&gt;
      &lt;xsl:with-param name="node" select="$node"/&gt;
    &lt;/xsl:call-template&gt;
  &lt;/xsl:param&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>This template searches in a table for the value that most-closely
(in the typical best-match sense of XSLT) matches the current (element)
node location.</para>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.string.upper">
<refnamediv>
<refname>string.upper</refname>
<refpurpose>Converts a string to all uppercase letters</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="string.upper"&gt;
&lt;xsl:param name="string" select="''"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>Given a string, this template does a language-aware conversion
of that string to all uppercase letters, based on the values of the
<literal>lowercase.alpha</literal> and
<literal>uppercase.alpha</literal> gentext keys for the current
locale. It affects only those characters found in the values of
<literal>lowercase.alpha</literal> and
<literal>uppercase.alpha</literal>. All other characters are left
unchanged.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>string</term>
<listitem>

<para>The string to convert to uppercase.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.string.lower">
<refnamediv>
<refname>string.lower</refname>
<refpurpose>Converts a string to all lowercase letters</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="string.lower"&gt;
&lt;xsl:param name="string" select="''"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>

<para>Given a string, this template does a language-aware conversion
of that string to all lowercase letters, based on the values of the
<literal>uppercase.alpha</literal> and
<literal>lowercase.alpha</literal> gentext keys for the current
locale. It affects only those characters found in the values of
<literal>uppercase.alpha</literal> and
<literal>lowercase.alpha</literal>. All other characters are left
unchanged.</para>

</refsect1><refsect1><title>Parameters</title>

<variablelist>
<varlistentry><term>string</term>
<listitem>

<para>The string to convert to lowercase.</para>

</listitem>
</varlistentry>
</variablelist>

</refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.select.choice.separator">
<refnamediv>
<refname>select.choice.separator</refname>
<refpurpose>Returns localized choice separator</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="select.choice.separator"/&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>
    
<para>This template enables auto-generation of an appropriate
    localized "choice" separator (for example, "and" or "or") before
    the final item in an inline list (though it could also be useful
    for generating choice separators for non-inline lists).</para>

    
<para>It currently works by evaluating a processing instruction
    (PI) of the form &lt;?dbchoice choice="foo"?&gt; :
    
<itemizedlist>
      <listitem>
        <simpara>if the value of the <tag>choice</tag>
        pseudo-attribute is "and" or "or", returns a localized "and"
        or "or"</simpara>
      </listitem>
      <listitem>
        <simpara>otherwise returns the literal value of the
        <tag>choice</tag> pseudo-attribute</simpara>
      </listitem>
    </itemizedlist>

    The latter is provided only as a temporary workaround because the
    locale files do not currently have translations for the word
    <wordasword>or</wordasword>. So if you want to generate a a
    logical "or" separator in French (for example), you currently need
    to do this:
    <literallayout>&lt;?dbchoice choice="ou"?&gt;</literallayout>
    </para>

    <warning>
      
<para>The <tag>dbchoice</tag> processing instruction is
      an unfortunate hack; support for it may disappear in the future
      (particularly if and when a more appropriate means for marking
      up "choice" lists becomes available in DocBook).</para>

    </warning>
  </refsect1></refentry>

<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="template.evaluate.info.profile">
<refnamediv>
<refname>evaluate.info.profile</refname>
<refpurpose>Evaluates an info profile</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>&lt;xsl:template name="evaluate.info.profile"&gt;
&lt;xsl:param name="profile"/&gt;
&lt;xsl:param name="info"/&gt;
  ...
&lt;/xsl:template&gt;</synopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>
    
<para>This template evaluates an "info profile" matching the XPath
    expression given by the <parameter>profile</parameter>
    parameter. It relies on the XSLT <function>evaluate()</function>
    extension function.</para>


    
<para>The value of the <parameter>profile</parameter> parameter
    can include the literal string <literal>$info</literal>. If found
    in the value of the <parameter>profile</parameter> parameter, the
    literal string <literal>$info</literal> string is replaced with
    the value of the <parameter>info</parameter> parameter, which
    should be a set of <replaceable>*info</replaceable> nodes; the
    expression is then evaluated using the XSLT
    <function>evaluate()</function> extension function.</para>

  </refsect1><refsect1><title>Parameters</title>
    
<variablelist>
       <varlistentry>
        <term>profile</term>
        <listitem>
          
<para>A string representing an XPath expression </para>

        </listitem>
      </varlistentry>
       <varlistentry>
        <term>info</term>
        <listitem>
          
<para>A set of *info nodes</para>

        </listitem>
      </varlistentry>
    </variablelist>

  </refsect1><refsect1><title>Returns</title>
    
<para>Returns a node (the result of evaluating the
    <parameter>profile</parameter> parameter)</para>

  </refsect1></refentry>
</reference>